[Tinyos-help] odd problem on message_t

[Ittipong Khemapech]

Hi,

I *didn't* look at your code and I'm not sure about the #define
TOSH_DATA_LENGTH to 35 in message.h.

Try add:

CFLAGS += -DTOSH_DATA_LENGTH=35

in your Makefile.

Please let me know how it goes.

Ittipong

2009/3/4 BAI LI <libai0915 at gmail.com>

> Hi All,
>
> I am currenting doing a very simple network test. I designed the message
> structure in ****.h file and some sending functions in the following.
>
> typedef nx_struct HashMsg {
>   nx_uint16_t nodeid;
>   nx_uint8_t flag;
>   nx_uint32_t payload_MD1;
>   nx_uint32_t payload_MD2;
>   nx_uint64_t payload_M;
>   nx_uint64_t payload_R;
>   nx_uint16_t payload_ID;
> } HashMsg;
>
>
> Part of the sending code is as folows:
>
>
> event void Timer0.fired() {
>
>  uint16_t destinationMote=0x0002;
>     if (!busy) {
>       HashMsg* hmpkt =
>  (HashMsg*)(call Packet.getPayload(&pkt, sizeof(HashMsg)));
>       if (hmpkt == NULL) {
>  return;
>       }
>       hmpkt->flag=1;
>       hmpkt->nodeid = TOS_NODE_ID;
>       hmpkt->payload_MD1 = 0x12345678;
>    hmpkt->payload_MD2 = 0x90ABCDEF;    // disable this line, it will work
>    hmpkt->payload_M=0x0000000000000000;
>    hmpkt->payload_R=0x0000000000000000;
>    hmpkt->payload_ID=0x0000000000000000;
>       if (call AMSend.send(destinationMote,
>           &pkt, sizeof(HashMsg)) == SUCCESS) {
>   call Leds.led0On();
>         busy = TRUE;
>       }
>     }
>
>   }
>
> When the program loads the data to send. The program is dead with one more
> line "hmpkt->payload_MD2 = 0x90ABCDEF";. I don't know what the problem is as
> I have changed the #define TOSH_DATA_LENGTH to 35 in message.h which is
> enough to handle the data. However it didn't work still. I suspect that it
> could be message size problem. But I can't work it out. THanks.
>
> Regards,
> Bai
>
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